CN105465864B - Wind speed and pressure sensor and range hood for range hood - Google Patents
Wind speed and pressure sensor and range hood for range hood Download PDFInfo
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- CN105465864B CN105465864B CN201610021831.6A CN201610021831A CN105465864B CN 105465864 B CN105465864 B CN 105465864B CN 201610021831 A CN201610021831 A CN 201610021831A CN 105465864 B CN105465864 B CN 105465864B
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- pressure sensor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2021—Arrangement or mounting of control or safety systems
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ventilation (AREA)
Abstract
The invention discloses a kind of wind speed and pressure sensors for range hood, including sampling section, the sampling section includes pressure pipe, the first pressure guiding pipe and the second pressure guiding pipe in the pressure tube end is set, and pressure sensor, first pressure guiding pipe and the second pressure guiding pipe are connected to the pressure sensor by conduit respectively；Partition board is equipped in the pressure pipe, the partition board will be divided into the first pressure chamber and the second pressure chamber in the pressure pipe, the first pressure chamber is towards air-flow, and the second pressure chamber is far from air-flow；First pressure guiding pipe is connected to the first pressure intracavitary, and second pressure guiding pipe is connected to the second pressure intracavitary；The pressure pipe (1) is equipped with and the interior high pressure pressure port (14) being connected to of the first pressure chamber (12), the pressure pipe (1) is equipped with has low pressure pressure port (15) with what is be connected in the second pressure chamber (13), it is characterised in that：The most path of the high pressure pressure port is more than or equal to 3mm, and the area of the high pressure pressure port is more than or equal to 9mm2。
Description
Technical field
The present invention relates to a kind of sensor, especially a kind of wind speed and pressure sensor for range hood, a kind of applications
There are the range hood of the wind speed and pressure sensor and the rotation speed of fan self_adaptive adjusting method of the range hood.
Background technology
Range hood when in use, when indoor oil smoke increase or common flue wind pressure increase when, it is necessary to adjustment electricity
Machine rotating speed improves smoke discharging effect with increasing exhaust amount, and traditional range hood generally requires user and adjusted manually according to subjective feeling
Section, does not only take up busy both hands, and finger also becomes easily infected by greasy dirt in this way；Automatically adjusting wind speed according to environment can be significantly
The intelligence of kitchen ventilator is promoted, this is one of the characteristic feature of the following kitchen appliance；Reduce wind speed automatically when oil smoke concentration is low,
Electric energy can be saved, noise can also be reduced to a certain degree, builds comfortable cooking environments.
Existing several principles for automatically adjusting kitchen ventilator wind speed and device are：1, by fume exhauster air inlet temperature value
The size of range burner firepower is perceived, then adjusts the rotating speed of motor；2, by analyze shooting kitchen in image, to image into
Row Smoke Detection, and judge the rank of smog, according to the rotating speed of the degree regulation motor of smog；3, it is examined by photoelectric detecting method
Oil smoke concentration is surveyed, the rotating speed of motor is then controlled according to oil smoke concentration；4, motor speed is detected by Hall sensor, electric current is mutual
Sensor detects current of electric.Then according to the load of wind turbine come the rotating speed of regulation motor.The above patent is all to use indirect parameter
(temperature, image, oil smoke concentration, electric current) reacts wind speed, is influenced by several factors, such as with the increase of usage time,
Current of electric can be increasing, even at this time back pressure do not have it is increased in the case of, motor speed is also increased, range hood
Response speed and sensitivity it is all relatively low.
In addition there are a kind of self-adaptive regulatings for the sensor for having and directly acquiring wind speed and pressure, such as the applicant
A kind of rotation speed of fan self-adaptive regulating of kitchen ventilator disclosed in Chinese patent application No. is 201210036642.8, including
There is blower fan system and change the rotational speed control module and sensor of the motor speed of the blower fan system, for direct or indirect
Ground perceives the air draft pressure size of blower fan system, however, sensor therein is more spoken of in general terms, it is not clear that the tool of sensor
Body structure.And the existing power hand shaft for air-conditioning, HVAC system is not suitable for oil suction then as common flowmeter
The working environment of smoke machine, since the flue gas in range hood contains a large amount of oil smoke, after a period of use, the greasy dirt of cohesion is often
Pressure port can be blocked so that pressure pipe cisco unity malfunction, therefore also need to it is for further study, with obtain be suitable for fume-exhausting
The wind speed and pressure sensor of machine working environment.
Invention content
The problem of first technical problem to be solved by this invention is for the above-mentioned prior art, provides one kind
Detection is timely and conveniently used for the wind speed and pressure sensor of range hood.
Second technical problem to be solved by this invention is to provide the suction that a kind of application has above-mentioned wind speed and pressure sensor
Kitchen ventilator.
It is adaptive that third technical problem to be solved by this invention is to provide a kind of rotation speed of fan of above-mentioned range hood
Adjustment control method.
Technical solution is used by the present invention solves above-mentioned first technical problem：A kind of wind speed for range hood
Wind pressure sensor, including sampling section, the sampling section include pressure pipe, and the first impulse in the pressure tube end is arranged
Pipe and the second pressure guiding pipe and pressure sensor, first pressure guiding pipe and the second pressure guiding pipe are connected to institute by conduit respectively
State pressure sensor；Partition board is equipped in the pressure pipe, the partition board will be divided into the first pressure chamber and second in the pressure pipe
Pressure chamber, the first pressure chamber is towards air-flow, and the second pressure chamber is far from air-flow；First pressure guiding pipe and described the
One pressure intracavitary is connected to, and second pressure guiding pipe is connected to the second pressure intracavitary；The pressure pipe is equipped with and is taken with first
The high pressure pressure port of intracavitary connection, the pressure pipe is pressed to have low pressure pressure port, spy equipped with what is be connected to the second pressure intracavitary
Sign is：The most path of the high pressure pressure port is more than or equal to 3mm, and the area of the high pressure pressure port is more than or equal to 9mm2。
The hole heart of high pressure pressure port described above can be located at pressure bottom of the tube and both sides aperture is respectively to the two of pressure port
Side wall extends, to keep high pressure pressure port integrally U-shaped.The hole heart of the high pressure pressure port can also be set to the side of pressure pipe
Wall and downside aperture is close to pressure bottom of the tube.
The high pressure pressure port is more than the side wall upper edge hole far from gravity direction towards the bottom port aperture of gravity direction
Oral pore diameter, to make high pressure pressure port be regarded as from perpendicular to the pressure pipe sidewall direction of gravity in inverted V-shaped or inverted U or the ladder that falls
Shape.
High pressure pressure port is blocked to further avoid greasy dirt, inner wall hole edge of the high pressure pressure port far from gravity direction is set
There are inwardly protruded interior guide portion, interior guide portion can be by greasy dirt diversion high pressure pressure port.
High pressure pressure port is blocked to further avoid greasy dirt, the high pressure pressure port is set close to the outer cinclides edge of gravity direction
Having can be by the outer guide portion of greasy dirt diversion high pressure pressure port.
The outer guide portion can be the tube wall of inclined cut or the outer guide plate of outwardly convex.
Since low pressure pressure port is connected to the second pressure chamber, and the second pressure chamber takes far from air-flow, therefore by low pressure
Pressure hole is arranged on the side wall of the pressure pipe, you can ensures that low pressure pressure port will not be blocked by greasy dirt；And in order to ensure to sample
Partial sampling precision, the pressure pipe are interspersed with the high pressure pressure port.
Likewise, the most path of the low pressure pressure port be more than or equal to 3mm, and the area for compressing pressure port be more than etc.
In 9mm2。
To avoid greasy dirt from blocking the first pressure guiding pipe, the second pressure guiding pipe even subsequent conduit, first pressure guiding pipe and the
Two pressure guiding pipes, which are tilted from the junction with the pressure pipe to the direction far from air-flow, to be extended, and has the inclined angle, even if
There is greasy dirt accumulation that can also flow back to come from the first pressure guiding pipe and the second pressure guiding pipe.
The wind turbine of range hood is controlled for ease of the data measured according to the sampling section of wind speed and pressure sensor, it is described
Wind speed and pressure sensor further includes that can be carried out in real time to the rotation speed of fan of kitchen ventilator according to the signal that the pressure sensor exports
The circuit control part of control.The circuit control part is located at outside the outlet housing.
The circuit control part includes main control module and controls the rotating speed control mould of the rotation speed of fan of the range hood
Block, the main control module are electrically connected with the pressure sensor and rotational speed control module respectively, to which main control module passes pressure
The real time value that sensor detects is compared with preset threshold value, to export tach signal to rotational speed control module, with
Control the motor speed of wind turbine.
The first pressure guiding pipe, the second pressure guiding pipe even subsequent conduit, first pressure are blocked to further avoid greasy dirt
Chamber is equipped with the first greasy dirt catch at the first pressure guiding pipe, and the second pressure chamber is equipped with the second greasy dirt at the second pressure guiding pipe
Catch.
The first technical solution is used by the present invention solves above-mentioned second technical problem：A kind of range hood, packet
Include wind turbine, and the outlet housing at the air outlet of the wind turbine, it is characterised in that：It is provided on the outlet housing as described above
Wind speed and pressure sensor, the pressure pipe of the wind speed and pressure sensor is horizontally set in the outlet housing, and described first draws
Pressure pipe, the second pressure guiding pipe, pressure sensor and circuit control part are located at outside the outlet housing.
Second of technical solution is used by the present invention solves above-mentioned second technical problem：A kind of range hood, packet
The wind turbine for including smoke machine shell and being arranged in smoke machine shell, it is characterised in that：Flue in front of the air inlet or outlet air
The flue at mouth rear is provided with wind speed and pressure sensor as described above, and the pressure pipe of the wind speed and pressure sensor is horizontally disposed
In flue, first pressure guiding pipe, the second pressure guiding pipe, pressure sensor and circuit control part are set in a protective cover,
The protective cover is arranged in smoke machine shell.
The third technical solution is used by the present invention solves above-mentioned second technical problem：A kind of range hood, packet
Containing the pipe being connect with common flue, it is characterised in that：Wind speed and pressure sensing as described above is provided on the pipe
The pressure pipe of device, the wind speed and pressure sensor is horizontally set in the pipe, first pressure guiding pipe, the second impulse
Pipe, pressure sensor) and circuit control part be located at outside the pipe.
The first technical solution is used by the present invention solves above-mentioned third technical problem：A kind of wind of range hood
Machine rotating speed self_adaptive adjusting method, it is characterised in that：Include the following steps：
1) range hood is opened, the wind turbine is run under specified n gears；
2) real-time wind speed V is detected by the sampling section of the wind speed and pressure sensor and is transferred to the circuit control portion
Point, by the circuit control part by real-time wind speed V and wind speed threshold X %*Vn0Compare, X% is preset value, Vn0For the wind
Wind speed under the n gears that machine measures under no back pressure environment, judges V and X%*Vn0Magnitude relationship；
3) if V is not less than X%*Vn0, then wind turbine holding operates at n gears；If V is less than X%*Vn0, then described
Circuit control part controls the wind turbine and jumps to the operating of n+1 gears, hereafter repeatedly step 3).
Second of technical solution is used by the present invention solves above-mentioned third technical problem：A kind of wind of range hood
Machine rotating speed self_adaptive adjusting method, it is characterised in that：By the circuit control part and range hood of wind speed and pressure sensor
Master board connection, the rotating speed of the wind turbine controls by the master board of range hood, then controls wind according to following step
Machine rotating speed：
1) after, the wind turbine of the range hood is opened；
2), by the real-time wind speed of wind speed and pressure Sensor monitoring, and wind speed is transferred to the master board of range hood,
The master board of range hood is by real-time wind speed and wind speed threshold X %*Vn0Compare, X% is preset value, Vn0Exist for the wind turbine
The rotating speed measured under no back pressure environment, judges V and X%*Vn0Magnitude relationship；
3), if V is not less than X%*Vn0, then the wind turbine is made to keep current rotating speed；If V is less than X%*Vn0, then oil smoke
The master board of machine controls the wind turbine and increases rotating speed, hereafter repeatedly step 3).
Compared with the prior art, the advantages of the present invention are as follows：No matter high pressure pressure port is which kind of shape is located at which kind of position,
As long as ensureing that the most path of high pressure pressure port is more than or equal to 3mm, and the area of the high pressure pressure port is more than or equal to 9mm2, the ruler
The very little size than oil dripping dirt is big, therefore can prevent greasy dirt from blocking well.
Description of the drawings
Fig. 1 is the sampling section schematic diagram of wind speed wind pressure sensor in the embodiment of the present invention one；
Fig. 2 is the sectional view of the pressure pipe of wind speed wind pressure sensor in the embodiment of the present invention one；
Fig. 3 is sectional view along A-A in Fig. 1.
Fig. 4 is the portions I enlarged drawing in Fig. 1.
Fig. 5 is the portions I enlarged drawing in Fig. 2.
Fig. 6 is the circuit control part schematic diagram of wind speed wind pressure sensor in the embodiment of the present invention one；
Fig. 7 is the schematic diagram for the outlet housing that the application of the present invention has the range hood of one wind speed and pressure sensor of embodiment；
Fig. 8 is the range hood self_adaptive adjusting method flow diagram of the present invention；
Fig. 9 is the wind speed back pressure graph of relation of the first working condition of the range hood of the present invention；
Figure 10 is the wind speed back pressure graph of relation of second of working condition of range hood of the present invention；
Figure 11 is the wind speed back pressure graph of relation of the third working condition of the range hood of the present invention.
Specific implementation mode
Below in conjunction with attached drawing embodiment, present invention is further described in detail.
Referring to Fig. 1, a kind of wind speed and pressure sensor is used for range hood, including sampling section and circuit control part, adopts
Sample part includes pressure pipe 1, is arranged in the first pressure guiding pipe 21 of 1 end of pressure pipe and the second pressure guiding pipe 22 and pressure sensing
Device 3.
Wherein, there is the partition board 11 being axially arranged along pressure pipe 1, to divide pressure pipe 1 for positioned at partition board in pressure pipe 1
The the first pressure chamber 12 and the second pressure chamber 13 of 11 both sides.First pressure chamber 12 is just facing towards air-flow, and the second pressure chamber 13 is remote
The first pressure chamber 12 is first passed through, using the second pressure chamber 13 when that is, air-flow passes through pressure pipe 1 from air-flow.
Offered on pressure pipe 1 it is multiple with high pressure pressure port 14 that is being connected in the first pressure chamber 12, and with the second pressure
The low pressure pressure port 15 being connected in chamber 13, air-flow can be entered in the first pressure chamber 12 by high pressure pressure port 14, can also be passed through
Low pressure pressure port 15 enters in the second pressure chamber 13.It is connected to guiding high pressure gas in first pressure guiding pipe 21 and the first pressure chamber 12
It is connected to guiding low-pressure air current in stream, the second pressure guiding pipe 22 and the second pressure chamber 13, as a result, the first pressure guiding pipe 21 and the second pressure guiding pipe
22 are guided out the air-flow of different pressures, and pressure sensor 3 can then obtain the different air-flow pressure force value of above-mentioned two, circuit control portion
It is divided to, wind speed can be measured by the pressure difference of two different air-flow pressure force value.The principle class of above-mentioned pressure pipe 1, pressure sensor 3
Be similar to air-conditioning, HVAC system power hand shaft.
In the present embodiment, pressure pipe 1 is horizontally disposed, and air-flow passes through pressure pipe 1 from the bottom to top, and the first pressure chamber 12 is located at
Second pressure chamber, 13 lower section.First pressure guiding pipe, 21 and second pressure guiding pipe 22 is from the junction with the pressure pipe 1 far from
The direction of air-flow, which tilts, to be extended, and the first pressure chamber 12 is equipped with the first greasy dirt catch 16 at the first pressure guiding pipe 21, described
Second pressure chamber 13 is equipped with the second greasy dirt catch 17 at the second pressure guiding pipe 22, is avoided that greasy dirt blocks the first pressure guiding pipe, the
Two pressure guiding pipes even subsequent conduit, it is shown in Figure 3.
To make pressure pipe 1 be suitable for the working environment of range hood, the most path of the high pressure pressure port is more than or equal to
3mm, and the area of the high pressure pressure port is more than or equal to 9mm2.Under the size, high pressure pressure port is than the size of oil dripping dirt
Greatly, therefore it can prevent greasy dirt from blocking well.
In the present embodiment, the hole heart of high pressure pressure port 14 is located at 1 bottom of pressure pipe and two side holes are along respectively to pressure port
14 two side extends, and to keep high pressure pressure port 14 whole U-shaped, and the upside aperture of high pressure pressure port is more than or equal to 3mm,
The entire area of high pressure pressure port is more than or equal to 9mm2, shown in Figure 2；And high pressure pressure port 14 is towards the bottom of gravity direction
Aperture aperture is more than the side wall upper edge aperture aperture far from gravity direction, to make high pressure pressure port from the pressure perpendicular to gravity
Pipe sidewall direction is regarded as in inverted V-shaped or inverted U or inverted trapezoidal, shown in Figure 1；The hole shape structure of this high pressure pressure port 14,
It can facilitate and using wall attachment effect greasy dirt easily readily be flowed out from the bottom port edge of high pressure pressure port, moreover it is possible to make not having
The greasy dirt for oozing and hanging is hung on the tube wall at high pressure pressure port aperture edge, and high pressure pressure port 14 is not easy to be blocked by greasy dirt.
Certainly, the position of high pressure pressure port 14 can also be integrally opened on the side wall of pressure pipe 1, i.e.,：The i.e. described high pressure
The hole heart of pressure port 14 is located at the side wall of pressure pipe 1 and downside aperture is close to 1 bottom of pressure pipe, while can also make high pressure pressure
Hole 14 towards gravity direction bottom part aperture diameter be more than far from gravity direction upper hole oral pore diameter, to make high pressure pressure port 14 from
Perpendicular to gravity direction in inverted V-shaped or inverted U or inverted trapezoidal；In this case, the bottom front of either pressure pipe is met
It is met to the side wall front of air-flow or pressure pipe to air-flow, also can reach what high pressure pressure port 14 was not easy to be blocked by greasy dirt
Purpose.
In the present embodiment, inner wall hole of the high pressure pressure port 14 far from gravity direction is inwardly protruding and can be by greasy dirt along being equipped with
The interior guide portion 18 of diversion high pressure pressure port 14, shown in Fig. 2 and Fig. 5；It is equipped with and can incite somebody to action close to the outer cinclides edge of gravity direction
The outer guide portion 19 of greasy dirt diversion high pressure pressure port 14, the present embodiment China and foreign countries guide portion 19 is the tube wall of inclined cut, referring to figure
1, shown in 4, greasy dirt diversion high pressure pressure port can be such that greasy dirt drop hangs on the tube wall of pressure pipe 1 by outer guide portion 19.
Low pressure pressure port 15 is located on the side wall of pressure pipe 1, and is interspersed with high pressure pressure port 14, i.e., in pressure pipe
1 it is radially not be overlapped with high pressure pressure port 14, thus the greasy dirt on low pressure pressure port 15 will not flow directly to high pressure pressure port
14。
First pressure guiding pipe 21 and the second pressure guiding pipe 22 are connected to pressure by the first conduit 41 and the second conduit 42 respectively and pass
Sensor 3, the pressure difference that pressure sensor 3 is exported according to two pressure guiding pipes according to dynamic pressure in Bernoulli equation and wind speed relationship, and pass through
The compensation of the parameters such as excess temperature, humidity, air pressure obtains real-time wind speed V.
Referring to Fig. 6, in addition, wind speed and pressure sensor further includes can be according to the signal that the pressure sensor 3 exports to oil
The rotation speed of fan of smoke machine carries out the circuit control part of real-time control, the circuit control part, including main control module 5 and rotating speed control
Molding block 6 can refer to disclosed in the patent document in background technology, and rotational speed control module 5 controls and changes range hood
Wind turbine motor speed, main control module 5 is electrically connected with pressure sensor 3, the real time value that pressure sensor 3 is detected with
Preset threshold value compares, to export tach signal to rotational speed control module 6, to control the motor speed of wind turbine.
Referring to Fig. 7, wind speed and pressure sensor of the invention, pressure pipe 1 is horizontally mounted in outlet housing 7, the first impulse
Pipe 21, the second pressure guiding pipe 22, pressure sensor 3 and circuit control part are located at outside outlet housing 7.Outlet housing 7 is arranged in fume-exhausting
The fan outlet of machine.
Pressure pipe 1 can also be horizontally set on common flue or without public cigarette in the wind speed and pressure sensor of the present invention
In the pipe of the smoke outlet connection of the building in road, the first pressure guiding pipe 21, the second pressure guiding pipe 22, pressure sensor 3 and circuit
Control section is located at outside the pipe 7；At this point, the wind speed of acquisition is relatively precisely and steady.
The wind speed and pressure sensor of the present invention can also directly prevent in front of kitchen ventilator enclosure interior, air inlet
On flue or the flue at air outlet rear；The pressure pipe 1 of wind speed and pressure sensor is horizontally set in flue, described first
Pressure guiding pipe 21, the second pressure guiding pipe 22, pressure sensor 3 and circuit control part are set in a protective cover, then by the protective cover
It is arranged in smoke machine shell.
Above-mentioned range hood can carry out automatic adjusument, range hood to the rotation speed of fan of range hood at work
Rotation speed of fan be set as multiple gears, the automatic tune of rotation speed of fan is carried out by the way of the threshold value of adjust automatically dynamic pressure
Section, foundation are：Under the same wind-speed gear of range hood, wind speed reduces with the increase of back pressure, the experiment proved that, wind
Under different stalls, the relation curve of wind speed and back pressure mutually disjoints machine.
Referring to Fig. 8, the wind turbine of the circuit control part of wind speed and pressure sensor and range hood is connected, wind turbine is adaptive
The control method of adjusting is：
1) range hood is opened, is switched on by user or other sensors, and run under specified n gears；
2) real-time wind speed V is detected by the sampling section of wind speed and pressure sensor, is transferred to main control module 5, main control module 5 will
The real-time wind speed V and wind speed threshold X %*Vn0Comparing, wherein X% is preset value, such as 90%, range hood it can make according to
The empirical value obtained with environment, Vn0For the wind speed under (no back pressure) measures under experimental situation n gears, judge V with
X%*Vn0Magnitude relationship；
3) if V is not less than X%*Vn0, then range hood holding operate at n gears；If V is less than X%*Vn0, then master control
Module 5 exports tach signal to rotational speed control module 6 so that the motor of the wind turbine of range hood automatic jumps to n+1 gears fortune
Turn (wind speed increasing), hereafter continues to judge V and X%*Vn0Between size, repeat step 3.
Specifically, referring to Fig. 9, in the graph, 1,2,3,4,5 curves are respectively gear 1, gear 2, gear 3, gear
4 and wind speed of the gear 5 under different back pressures, gear is 2 when such as opening, at this point, operating point, in B points, the wind speed of B points is more than A points
(threshold point), then range hood be then maintained at gear 2 work.
Referring to Figure 10, likewise, in the graph, 1,2,3,4,5 curves are respectively gear 1, gear 2, gear 3, shelves
The wind speed of position 4 and gear 5 under different back pressures, gear is 2 when such as opening, at this point, operating point, in B points, the wind speed of B points is less than A
Point (threshold point), then range hood jump to gear 3 automatically, operating point is C points at this time, and the wind speed of C points is more than A points, hereafter oil suction
Smoke machine remains in the work of gear 3.
Referring to Figure 11, likewise, in the graph, 1,2,3,4,5 curves are respectively gear 1, gear 2, gear 3, shelves
The wind speed of position 4 and gear 5 under different back pressures, gear is 2 when such as opening, at this point, operating point, in B points, the wind speed of B points is less than A
Point (threshold point), then range hood jump to gear 3 automatically, operating point is C points at this time, and the wind speed of C points then inhales still less than A points
Kitchen ventilator continues up trip stop and works to gear 4, until operating point wind speed is more than A points.
If wind speed and pressure sensor does not include wind turbine that can be according to the signal that the pressure sensor 3 exports to kitchen ventilator
Rotating speed carries out the circuit control part of real-time control, can also connect the master board of wind speed and pressure sensor and range hood
It connects, and the rotating speed of existing wind turbine is controlled by the master board of range hood, then master board control is according to following steps
Rapid control rotation speed of fan：
1) after, the wind turbine of the range hood is opened；
2), by the real-time wind speed of wind speed and pressure Sensor monitoring, and wind speed is transferred to the master board of range hood,
The master board of range hood is by real-time wind speed and wind speed threshold X %*Vn0Compare, X% is preset value, Vn0Exist for the wind turbine
The rotating speed measured under no back pressure environment, judges V and X%*Vn0Magnitude relationship；
3), if V is not less than X%*Vn0, then the wind turbine is made to keep current rotating speed；If V is less than X%*Vn0, then oil smoke
The master board of machine controls the wind turbine and increases rotating speed, hereafter repeatedly step 3).
Claims (14)
1. a kind of wind speed and pressure sensor for range hood, including sampling section, the sampling section include pressure pipe
(1), first pressure guiding pipe (21) and second pressure guiding pipe (22) and pressure sensor of the setting in the pressure pipe (1) end
(3), first pressure guiding pipe (21) and the second pressure guiding pipe (22) are connected to the pressure sensor (3) by conduit respectively；
Partition board (11) is equipped in the pressure pipe (1), the partition board (11) will be divided into the first pressure chamber in the pressure pipe (1)
(12) and the second pressure chamber (13), the first pressure chamber (12) is towards air-flow, and the second pressure chamber (13) is far from air-flow；
It is connected in first pressure guiding pipe (21) and the first pressure chamber (12), second pressure guiding pipe (22) and second pressure
Connection in chamber (13)；The pressure pipe (1) be equipped with the high pressure pressure port (14) that is connected in the first pressure chamber (12), it is described to take
Pressure pipe (1) is equipped with and the interior low pressure pressure port (15) being connected to of the second pressure chamber (13), it is characterised in that：The high pressure pressure port
Most path be more than or equal to 3mm, and the area of the high pressure pressure port be more than or equal to 9mm2；The high pressure pressure port (14) is separate
The inner wall hole of gravity direction is along equipped with inwardly protruded interior guide portion；Outer wall of the high pressure pressure port (14) close to gravity direction
Hole edge is equipped with can be by the outer guide portion of greasy dirt diversion high pressure pressure port (14).
2. the wind speed and pressure sensor according to claim 1 for range hood, it is characterised in that：The high pressure pressure
The hole heart in hole is located at pressure bottom of the tube and both sides aperture extends to the two side of pressure port respectively, to make high pressure pressure port (14)
It is whole U-shaped.
3. the wind speed and pressure sensor according to claim 1 for range hood, it is characterised in that：The high pressure pressure
The hole heart in hole (14) is located at the side wall of pressure pipe (1) and downside aperture is close to pressure pipe (1) bottom.
4. the wind speed and pressure sensor according to claim 2 or 3 for range hood, it is characterised in that：The high pressure
Pressure port (14) is more than the side wall upper edge aperture aperture far from gravity direction towards the bottom port aperture of gravity direction, to make
High pressure pressure port is regarded as from the side wall of pressure pipe length direction in inverted V-shaped or inverted U or inverted trapezoidal.
5. the wind speed and pressure sensor according to claim 1 for range hood, it is characterised in that：The outer guide portion
For the tube wall of inclined cut or the outer guide plate of outwardly convex.
6. being used for the wind speed and pressure sensor of range hood as described in claim 1, it is characterised in that：The first pressure chamber
(12) the first greasy dirt catch is equipped at the first pressure guiding pipe (21), the second pressure chamber (13) is close to the second pressure guiding pipe (22)
Place is equipped with the second greasy dirt catch.
7. being used for the wind speed and pressure sensor of range hood as described in claim 1, it is characterised in that：The wind speed and pressure passes
Sensor further includes that can obtain the circuit control part of real-time wind speed V according to the signal that the pressure sensor (3) exports.
8. being used for the wind speed and pressure sensor of range hood as claimed in claim 7, it is characterised in that：The circuit control portion
Divide the rotational speed control module (6) for the rotation speed of fan for including main control module (5) and the control range hood, the main control module
(5) it is electrically connected respectively with the pressure sensor (3) and rotational speed control module (6).
9. being used for the wind speed and pressure sensor of range hood as described in claim 1, it is characterised in that：The low pressure pressure port
It is arranged on the side wall of the pressure pipe, and the most path of the low pressure pressure port is more than or equal to 3mm, and the low pressure pressure port
Area be more than or equal to 9mm2。
10. a kind of range hood, including wind turbine, and the outlet housing (7) at the air outlet of the wind turbine, it is characterised in that：
Wind speed and pressure sensor as described in claim 1, the pressure of the wind speed and pressure sensor are provided on the outlet housing (7)
Pipe (1) is horizontally set in the outlet housing (7), first pressure guiding pipe (21), the second pressure guiding pipe (22), pressure sensor
(3) and circuit control part is located at the outlet housing (7) outside.
11. a kind of range hood, including smoke machine shell and the wind turbine that is arranged in smoke machine shell, it is characterised in that：The wind turbine
The flue of flue or air outlet rear in front of air inlet is provided with wind speed and pressure sensor as described in claim 1, described
The pressure pipe (1) of wind speed and pressure sensor is horizontally set in flue, first pressure guiding pipe (21), the second pressure guiding pipe (22),
Pressure sensor (3) and circuit control part are set in a protective cover, which is arranged in smoke machine shell.
12. a kind of range hood, including the pipe being connect with common flue, it is characterised in that：It is provided on the pipe
Wind speed and pressure sensor as described in claim 1, the pressure pipe (1) of the wind speed and pressure sensor be horizontally set on it is described go out
In smoke pipe, first pressure guiding pipe (21), the second pressure guiding pipe (22), pressure sensor (3) and circuit control part are located at described
Outside pipe.
13. a kind of rotation speed of fan self_adaptive adjusting method of range hood as claimed in claim 10, it is characterised in that：
The wind turbine of the circuit control part of wind speed and pressure sensor and range hood is connected, the circuit control portion of wind speed and pressure sensor
Divide and rotation speed of fan is controlled according to following step：
1) range hood, is opened, the wind turbine is run under specified n gears；
2), by the real-time wind speed V of the wind speed and pressure Sensor monitoring, by the circuit control part by real-time wind speed V and wind speed
Threshold X %*Vn0Compare, X% is preset value, Vn0Wind speed under the n gears measured under no back pressure environment for the wind turbine, sentences
Disconnected V and X%*Vn0Magnitude relationship；
3), if V is not less than X%*Vn0, then wind turbine holding operates at n gears；If V is less than X%*Vn0, then the circuit
Control section controls the wind turbine and jumps to the operating of n+1 gears, hereafter repeatedly step 3).
14. a kind of rotation speed of fan self_adaptive adjusting method of range hood as described in claim 11 or 12, feature
It is：The master board of wind speed and pressure sensor and range hood is connected, the rotating speed of the wind turbine by range hood master control
Making sheet controls, and master board controls rotation speed of fan according to following step：
1) after, the wind turbine of the range hood is opened；
2), by the real-time wind speed V of the wind speed and pressure Sensor monitoring, and real-time wind speed V is transferred to the main control of range hood
Plate, the master board of range hood is by real-time wind speed V and wind speed threshold X %*Vn0Compare, X% is preset value, Vn0For the wind
Wind speed under the n gears that machine measures under no back pressure environment, judges V and X%*Vn0Magnitude relationship；
3), if V is not less than X%*Vn0, then the wind turbine is made to keep current rotating speed；If V is less than X%*Vn0, then kitchen ventilator
Master board controls the wind turbine and increases rotating speed, hereafter repeatedly step 3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610021831.6A CN105465864B (en) | 2016-01-13 | 2016-01-13 | Wind speed and pressure sensor and range hood for range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610021831.6A CN105465864B (en) | 2016-01-13 | 2016-01-13 | Wind speed and pressure sensor and range hood for range hood |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105465864A CN105465864A (en) | 2016-04-06 |
| CN105465864B true CN105465864B (en) | 2018-11-06 |
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ID=55603845
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610021831.6A Active CN105465864B (en) | 2016-01-13 | 2016-01-13 | Wind speed and pressure sensor and range hood for range hood |
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| Country | Link |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106895467A (en) * | 2017-05-09 | 2017-06-27 | 华帝股份有限公司 | Constant-air-volume range hood and control method thereof |
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|---|---|---|---|---|
| US5515840A (en) * | 1995-02-24 | 1996-05-14 | Jang; Sun-Sing | Fume exhausting device |
| CN104006431A (en) * | 2014-04-28 | 2014-08-27 | 四川长虹电器股份有限公司 | Automatic wind speed adjustment method of smoke ventilator |
| CN203810498U (en) * | 2014-03-17 | 2014-09-03 | 绍兴市凯迪森电器有限公司 | Motor control system of range hood |
| CN105158504A (en) * | 2015-09-17 | 2015-12-16 | 宁波方太厨具有限公司 | Wind speed and wind pressure sensor for range hood and range hood |
| CN205351443U (en) * | 2016-01-13 | 2016-06-29 | 宁波方太厨具有限公司 | A air speed and pressure sensor and range hood for range hood |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202253865U (en) * | 2011-08-24 | 2012-05-30 | 美的集团有限公司 | Front panel of range hood |
-
2016
- 2016-01-13 CN CN201610021831.6A patent/CN105465864B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5515840A (en) * | 1995-02-24 | 1996-05-14 | Jang; Sun-Sing | Fume exhausting device |
| CN203810498U (en) * | 2014-03-17 | 2014-09-03 | 绍兴市凯迪森电器有限公司 | Motor control system of range hood |
| CN104006431A (en) * | 2014-04-28 | 2014-08-27 | 四川长虹电器股份有限公司 | Automatic wind speed adjustment method of smoke ventilator |
| CN105158504A (en) * | 2015-09-17 | 2015-12-16 | 宁波方太厨具有限公司 | Wind speed and wind pressure sensor for range hood and range hood |
| CN205351443U (en) * | 2016-01-13 | 2016-06-29 | 宁波方太厨具有限公司 | A air speed and pressure sensor and range hood for range hood |
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|---|---|
| CN105465864A (en) | 2016-04-06 |
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